Agility & Speed to Market: Modularize New COBOL business service with WCA4Z

Now, the journey moves from discovery to transformation.
 In this next phase, the focus is on modularizing that business logic into a clean, reusable COBOL service, guided by AI and validated through automated testing.
Using Watson Code Assistant for Z, the developer extracts the relevant paragraphs from existing programs and reassembles them into a new modular service — with clear structure, efficient flow, and enhanced maintainability.
 The AI engine identifies dependencies, control flow, and variables to ensure nothing is missed, while also providing optimization advice to improve code performance.
Once the new service is generated, Test Accelerator for Z takes over — creating unit and integration tests automatically. It records real mainframe transactions, generates test artifacts, and executes validation runs directly on z/OS, ensuring the refactored logic behaves exactly as intended.
Together, these two tools represent a powerful synergy — AI-guided refactoring combined with automated, early-stage validation — reducing risk, accelerating delivery, and improving code quality across the modernization lifecycle.